Multisite cat c network questions

[phillmobile]

I have a few questions as we start the slow move from mpt1327 to NXDN cat C but the first question is here.

If i have one lan across several towers all on the same subnet can the sites talk to each other and work for example site 1 is 172.16.101.1 site 2 is 172.16.102.1 or do the sites have to be all vpn to each site even though its one big lan.

Meaning the main repeater ip address at each radio site if thats how it works, i need to read the system manual another ten times yet.

hope that makes sense, the system manual i have a copy of mentions routers everywhere.

More questions to come once i figure this bit out, dont actually have the equipment yet.

Phill UK

 

[mmckenna]

I know what you mean. That part of the manual I think is pretty poorly written. I think it was primarily written for radio guys with zero network understanding and is based off the most common design, basically buying an internet connection for each individual radio site. Most radio guys now have a fair amount of network knowledge, so I really do think it's time Kenwood rewrites that section.

I don't know for sure, but I'm running a 5 channel trunked system. As part of the trunked system, all 5 are connected to a single switch. They all talk amongst each other over the LAN. No VPN involved.

I'm probably going to be adding a second site, and like you, I've got a common LAN across all our sites.

 

[kd4efm]

Greetings,
With the NXDN Type C trunking, you are good to go as long as you have the 172.16.x.x can talk between the 2 sites.

IF you have a different IP (WAN) at these sites and they are not already VPN, it will not work.

(example)
You do not have to VPN a class B if you already have a lan between them on the same network.
172.16.1.1 - 1.5 <- Site 1 repeaters 1 through 5
172.16.2.1 - 2.5 <- Site 2 repeaters 1 through 5
x,x,x,x,x,x,x,x,x,
172.16.1.48 - 48.5 <- Site 48 repeaters 1 through 5

Same goes with the NXR-810 with KTI-3's, (though 15 is the max sites), you can LAN the sites, and all can IP back to each other, your good to go.

I work a now 40 site system here in Florida (FleetTalk)

 

[phillmobile]

Thanks guys, will keep you updated as i go on

 

[bdbrennan]

Thanks guys, will keep you updated as i go on

A single subnet can work, but you really need routers at each site to do it right. Splitting each site into its own broadcast domain is the proper way to build any site, especially with type-C trunking.

I would also call the Kenwood guys in the UK and ask for advice.